Pooled data, generous minutes and rolling 30-day terms — the simplest way to cut your mobile spend without changing your handsets.
SIM-only is the smartest option for businesses that already have decent handsets — and don't want to bake a phone-shaped loan into their mobile bill. We compare pooled-data SIM-only plans across every UK network, with terms from rolling monthly to 24 months.
The capabilities we look for when shortlisting providers in this category.
Shared data allowance across your whole team — heavy users covered by light ones, no overage drama.
30-day rolling, 12-month or 24-month options — switch as your business changes shape.
EU roaming as standard with affordable global add-ons on the major networks.
Spot heavy users, dormant SIMs and unauthorised premium-rate calls before they bite.
Issue SIMs into employee-owned devices with central billing and an MDM overlay.
Keep the phones you've already paid off and slash the monthly bill by switching to SIM-only.
Rolling 30-day SIMs that you can scale up and down with hiring peaks.
Mix SIMs across networks for the best coverage at every site, billed in one place.
If your handsets are less than three years old and still in good shape, SIM-only is almost always the cheapest and most flexible way to keep them connected. You unbundle the device cost, keep the network you trust and gain the freedom to switch if pricing changes.
Pooled data plans share one big allowance across all your SIMs. The result: no individual user goes over their cap as long as the team total is within budget — and you get a clean, predictable monthly bill.
Rolling 30-day SIMs are perfect for short-term hires and seasonal teams; 12- or 24-month deals unlock the lowest per-SIM pricing. We compare both for you so the trade-off is obvious.
Yes — number porting is included with every business SIM-only plan we compare.
You can add devices on lease or upfront purchase at any point — no need to bundle them into the SIM contract.
Most providers ship within 1–3 working days; eSIM activation is often same-day.
Answer a few questions and we'll shortlist the best-fit providers for your business — free, fast and unbiased.
Business Connectivity
Reliable, business-grade internet — leased lines, FTTP, SD-WAN and 5G failover — so your phones, apps and people never miss a beat.
AI Services
AI receptionists, voice agents, transcription and conversational analytics — applied to the calls and conversations your business already has.
Business Mobiles
Handsets, plans and mobile device management — bundled with your business calling for a single bill and a single support number.
Carrier Services
Wholesale voice, SIP trunks, number porting and international DDIs — the carrier layer behind every modern phone system.